Prunes are dried plums. They are small, dark-colored, and have a wrinkled skin. They are sweet and slightly chewy, and are often used as a snack or as an ingredient in a variety of dishes. Prunes are made by drying plums until the moisture content is reduced to about 15%. They are a good source of antioxidants, fiber, and potassium, and they are also low in calories. Prunes are often used in baking, such as in prune bread or prune cake, and they can also be used to make prune puree or prune juice. In addition to their use in cooking, prunes are sometimes eaten as a natural remedy for constipation due to their high fiber content